Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual campeonato teve uma margem de playoff de 2?
 ###Tabelas: CREATE TABLE new_mexico_places_ranked_by_per_capita_income (new_mexico_places_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Place VARCHAR, County VARCHAR, Per Capita Income VARCHAR, Median House- hold Income VARCHAR, Median Family Income VARCHAR, Population INT, Number of Households INT) CREATE TABLE wins_18 (wins_18_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Championship VARCHAR, 54 holes VARCHAR, Winning score VARCHAR, Margin VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE regular_cast (regular_cast_id AUTO_INCREMENT PRIMARY KEY, Actor VARCHAR, Character VARCHAR, Title/Rank VARCHAR, Series VARCHAR, Years VARCHAR) CREATE TABLE list_of_sponsored_cosponsored_legislation (list_of_sponsored_cosponsored_legislation_id AUTO_INCREMENT PRIMARY KEY, Years covered VARCHAR, All bills sponsored INT, All amendments sponsored INT, All bills cosponsored INT, All amendments cosponsored INT, Original bills cosponsored INT, Original amendments cosponsored INT, Bill support withdrawn INT, Amendment support withdrawn INT) CREATE TABLE 1997_broadway_revival (1997_broadway_revival_id AUTO_INCREMENT PRIMARY KEY, Year INT, Award VARCHAR, Category VARCHAR, Nominee VARCHAR, Result VARCHAR)  
SELECT Championship FROM wins_18 WHERE Margin = Playoff 2